<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>4学子页面</title>
</head>
<body>
    <div class="f1">
        <div class="left"></div>
        <div class="right"></div>
    </div>
    <div class="f2">
        <div class="left"></div>
        <div class="card"></div>
        <div class="card"></div>
        <div class="card"></div>
    </div>
    <div class="f3"></div>

</body>
</html>